ARB Futures Longs vs Shorts

This is the most commonly misunderstood aspect of the Long / Short Ratio. Even if the long-to-short account ratio is 1.2, it does not mean that the capital on the long side is greater than that on the short side. What it actually indicates is: There are more accounts holding long positions. However, the total notional value of long and short positions remains exactly equal. This usually implies that: The long side has more participants with smaller average position sizes (typically retail traders). The short side has fewer participants with larger average position sizes (typically whales or institutions). Therefore, the Long / Short Ratio is fundamentally a structural and sentiment indicator, not a measure of capital size.

In the crypto derivatives market, the Long / Short Ratio is typically categorized into several types: Taker Buy / Sell Long–Short Ratio: Based on taker buy (market buy) and taker sell (market sell) volume over a given period, reflecting short-term shifts in market sentiment and commonly used for short-term analysis. Exchange Long / Short Account Ratio (Account): Measures the proportion of long versus short accounts among all open-position accounts, with each account counted only once. Top Trader Long / Short Account Ratio: Includes only accounts ranked in the top 20% by margin balance, used to observe directional bias among leading traders. Top Trader Long / Short Position Ratio: Compares long and short position trends of top traders, more directly reflecting position changes of large capital. Different types of Long / Short Ratios apply to different analytical scenarios and should not be used interchangeably.

The Exchange Long / Short Account Ratio compares the number of accounts holding long positions with those holding short positions, rather than the size of the positions themselves. Because the total notional value of long and short positions in the derivatives market must always be equal: When the number of long accounts significantly exceeds the number of short accounts, it often indicates that: The long side is dominated by retail traders with smaller average position sizes. The short side is dominated by large traders or institutions with larger average position sizes. This is also why, when the account-based Long / Short Ratio becomes excessively high, the market may sometimes be more prone to contrarian price movements.

The ARB Top Trader Long / Short Ratio typically includes only accounts ranked in the top 20% by margin balance and is used to observe whether leading capital is biased toward long or short positions. In the crypto futures and perpetual swaps market, top traders generally have: Stronger risk management capabilities More mature trading systems Higher sensitivity to trend changes As a result, both the Top Trader Long / Short Account Ratio and the Top Trader Long / Short Position Ratio are commonly used to assess which side major capital currently favors. It is important to note that some institutions use derivatives for hedging or spot risk offsetting, so the Top Trader Long / Short Ratio should always be interpreted in the context of overall market conditions.

Unlike the Top Trader Long / Short Account Ratio, the Top Trader Position Long / Short Ratio directly compares: Total long positions held by top traders vs. total short positions held by top traders Its key advantages include: Providing a more intuitive view of changes in the actual position size of major capital Helping identify whether top traders are increasing positions, reducing exposure, or shifting directional bias During periods when ARB Open Interest changes significantly, the Top Trader Position Long / Short Ratio often offers important complementary insights.

The Bitfinex Margin Long / Short Ratio measures the proportion of borrowed assets used for long positions versus short positions in the spot margin market, rather than positions in perpetual or delivery futures contracts. Because Bitfinex has a relatively high concentration of professional traders and medium- to long-term capital among its long-term users, its margin Long / Short Ratio is often regarded as: A reference indicator for medium- to long-term market sentiment A comparative benchmark between the spot margin market and the derivatives market When a clear divergence appears between the Bitfinex Margin Long / Short Ratio and mainstream derivatives Long / Short Ratios, it is often worth close attention.

The Long / Short Ratio essentially reflects how traders’ views and behaviors are distributed, rather than determining which side will ultimately win. In the derivatives market: When long or short participation becomes overly concentrated on one side, it often signals highly unified sentiment among retail traders. The opposite side may instead be dominated by a small number of large traders or institutions. The crypto derivatives market itself is highly leveraged and strongly game-theoretic in nature. This is why, when analyzing the ARB Long / Short Ratio, many traders focus more on whether large traders and retail traders are positioned on the same side, or whether a clear divergence has already emerged.